At a festival, spherical balloons with a radius of

110.cm

are to be inflated with hot air and released. The air at the festival will have a temperature of

25°C

and must be heated to

100°C

to make the balloons float.

3.00kg

of butane

C4H10

fuel are available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot air.

Here are some data you may find useful:

Specific heat capacity of air: 1.009J·g°C

Density of air at 100°C: 0.946kgm3

Density of butane at 100°C: 1.898kgm3

Formation enthalpy of butane at
25°C: ?125.7kJmol

i think so it’s will be b yes i believe its

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but